The purpose of this study is to search for the hereditary (genetic) causes of uterine fibroids. Some women with uterine fibroids may have one or more genes that make them more likely to develop uterine fibroids. We are trying to identify these genes to better understand how and why uterine fibroids develop and to design better treatment options for women with uterine fibroids. This information may also help us to understand and treat other problems that may be caused by these genes.